I don't know about you but I have a terrible weakness for anything shiny or glittery, so a collection of gems in mini bottles with little cork stoppers was irresistible and at £2 guilt free. If you like the look of these trot along to The Range (check their website for your local store http://www.therange.co.uk ). I have crafty plans for the empty bottles as well, I think they'd look great attached to a mini book spine.
I also picked up a couple of sets of these paperclips at Tiger (http://www.tigerstores.co.uk ). The hearts were the grand sum of £1 and the hangers £2.